Warning-signal.



C. F. MILLER.

WARNING SIGNAL.

AYPLICATION FILED JULY 25. $916- 1,%m,5$& Patented Jan.16,1917. 2 SHEETS-SHEET I.

C. F. MILLER.

I WARNING SIGNAL. APPLICATION FILED Jun! 25. 1916.

Patented Jan.1 6,1917.

2 SHEETSSHEET 2.

awe/@201; Qharlaa [EMA/fer let GEAR-LES F. MILLER, OF DEEPCBEEK, WASHINGTON.

WARNING-SIGNAL.

Specification of Letters Patent.

Patented am. is, teat.

' Applicationflled July 25, 1916. Serial No. 111,185.

To all whom it may concern:

Signals, of which the following is a speci fication.

My invention relates to improvements in warning signals for automobiles, and more particularly to that type of signalada ted to utilize the force of the exhaust gases om the engine.

The object of my invention resides in providing an inexpensive and thoroughly practical device, embodying certain novel features of construction, which may be readily installed upon the average car with very little labor and without the necessity for mechanical alterations.

I have shown in the accompanying drawings a construction especially adapted for adjustment to the extreme end-of the exhaust pipe, the gases being used after they have passed the muflier. By this arrangement I am enabled to secure an instrument of a smoother, more even tone than is possi- I ble where the device is mounted on the exhaust pipe ahead of the muffler, the latter disposition resulting in the production of a series of toots or blasts corresponding with the separate pulsations induced by the engine cylinders. At the same time I find that my arrangement produces a warning sound of sufficient volume and distinctness to render it desirable as well as eflicient under all conditions. 7

In the accompanying drawings Figure 1 is an under-side plan view of the signal proper, showing the hinged valve member in closed or operative position. Fig. 2 is a sectional view thereof.-- Fig. 3 is a view showing the hinged valve member in its normal or open position. Fig. 4 shows a detail of a carbon removing device which is a permanent feature of my invention. Fig. 5 is an enlarged detail view in perspective of the operating pedal and means for mounting the same. Fig. 6 is an enlarged detail view partly in section, showing the method of mounting the pivoted arms of the carbon removing device, and Fig. 7 is a sectional view of an automobile body showing the manner of mounting my complete device.

Referring more specifically to the drawings in -WhlCh like reference characters are used to designate like parts'in the several views, the numeral 1 indicates a T or threeway fitting adapted to be secured to the end of the exhaust pipe2 by a set-screw 3. As shown in Fig. 1 the horn or whistle 4 having the sound producing-apertures 5 is mounted in said fitting at right-angles to the exhaust pipe. A weighted valve closure 6 is hinged at 7 to the T-fitting the closure being normally openas shown in Fig. 3. The said valve closure is provided with the small eye 8 to which is fastened the wire .9 which passes through the guide-eye 10 on the fitting and extends for'ward to a controlling means mounted upon the floor of the car, which means consists of a pivoted lever 11, foot pedal 12, and members 13 adapted to be bolted to the floor of the car. The pedal is located so that it may be conveniently depressed by the heel of the driver. On the T-fitting on the under side is a projecting arm 14 which supports the closure 6 when the same is in its open posit-ion and prevents it from a too great movement on its hinge, thus insuring instant response to pressure on the pedal 12 by the operator.

It is well known that in most cars, especially where cheap oil is used, that a great deal of carbon and partly burned oil is thrown 011' by the engine through the exhaust pipe resulting in time in the stoppage or reduction of the area of said pipe and its attachments. In the present case it would act to cake the interior of the horn body with a deposit of carbon which would affect the tone qualities of the horn by insulating the same to such an extent as to.

prevent the proper sound vibrations. To overcome this I have provided the carbon removing device, Figs. 2, 3 and 6, consistmg of a screw-cap 15 for closing the end of the horn and in which is mounted the screw-bar 16 carrying at its inner end a block 17 secured by a nut 18, and arms 19 pivotally mounted on said block by the screws 20. Scraper members 21 are secured to the cap and also to the outer ends of the said arms 19 and extend into the horn when the cap is in place. These scraper members, which normally spring inwardly away fromthe walls of the horn, are forced out- Wardly against the walls by the movement of the said arms when the screw-bar is screwed down. Assuming that the latter operation has been effected it is obvious that by the act of unscrewing the cap the scraper members or knives will then serve to scrape any deposit free so that the same may be blown from the horn upon the entire removal of the cap. The operation of the device requires very little time and forms a convenient means always at hand for keeping the signal in proper condition, its presence serving to constantly remind and induce adequate care of the instrument.

While I have specifically described the elements best adapted to perform the functions set forth, it is obvious that various changes in the form, proportions and in the details of construction may be resorted to, without departing from the spirit of the invention as hereinafter claimed. And I want it understood that I distinctly reserve the right to make such changes without waiving the protection sought by this application for patent.

Having described my improvement, its operation and advantages, what I claim as new and desire to secure by Letters Patent of the United States, is

1. A warning signal adapted to be 0perated by fluid pressure, consisting of a tubular sounding member, means for introducing fluid pressure thereto, and a device carried by the said member for removing foreign deposits from the interior surface thereof consisting of a rotatable closure, scraper members carried thereby, means for spreading said scraper members.

2. A warning signal adapted to be 0perated by fluid pressure, consisting of a tubular sounding member, means for intro ducing fluid pressure thereto, and a device carried by the said member for removing foreign deposits from the interior surface thereof consisting of a screw-cap, scraper members carried thereby, a screw-bar mounted in said cap, and pivoted arms secured to said bar and said scraper means.

In testimony whereof I afiix my signature.

CHARLES F. MILLER.

and 

